Comb.



110.740,338. PATBNTBD SEPT. 29, 1903.

00MB. APPLIGATIQK IILED SEPT. B, 1902.

l0 KODBL.

IN VEIV (Jon ATTORNEK UNITED STATES meenten september 29, reos,

'Perniwr Ormes.

COIVIB.

SPECIFICATION forming part of Letters Patent No. 740,338, dated September 29, 1903.

Application filed September 6, 1902. Serial No. 122,291.v (No model.)

To @ZZ whom t may concern.:

Beit known that I, HEINRICH TRAUN, a citt. zen of Germany, residing at Hamburg, Germany, have invented certain new and useful 5 Improvementsin Combs, of which the following is a specification.

This invention relates to improvements in combs; and the object of my invention is to provide a new and improved comb which is simple in construction, strong, durable, and not expensive in manufacture.

Inthe accompanying drawings, in which like letters of reference indicate like parts in all the iigures, Figure l is a plan view of part of the female die for making the comb. Fig. 2 is a vertical transverse sectional view of the same, also showing the male die. Figs', el, 5, 6, and 7 are vertical transverse sectional views of various types and kinds of combs made according to my improvement. Fig. 8 is a side View of a parting-comb, also -made according to my improvement. Fig. 9 is a cross-section of a further modification.

My improved comb is to be made-of hard rubber, and the comb may have coarse or iine teeth, or both coarse and line teeth, and the teeth and back may be of any desired shape.

For making the comb l use a female die A, in which are formed t'wo molds B for two longitudinal comb-halves-that is to say, for two half-sections like those formed by splitting a comb vertically and longitudinally. The points of the tooth-recesses in said molds are yperfectly opposite each other and in line, and the points of these tooth-recesses are as close to each other as possible and may even be connected. By pressing plastic or semiplastic unvulcanized rubber and finishing the upper surfaces of the material in said molds, so that vthey are perfectly ilat and smooth, two longitudinal comb-halves are formed. These two comb-halves, molded of unvulcanized rubber, are then folded together or placed against each other with their inner smooth surfaces in contact, and the two halves arethen united bythe vulcanizing process.

It is very desirable to have the area of the comb-back increased in cross-section, especially for combing long and heavy hair, as it enables one to obtain a firmer grip on the comb, and it is less tiring to hold a comb with anenlarged back than to hold a comb with la narrow back. By enlarging the back very much material is wasted in the back and the comb is made unduly heavy, and, furthermore, the sudden decrease of material from the enlarged back to the comb-teeth causes the teeth to break olf much more readily from such an enlarged back than from an ordinary back, as experience has shown. In order to overcome this difficulty and to makev the back lighter and at the same time stronger than the solid back, I make it hollow b vproviding a recess or longitudinal bore within the back. For this purpose male dies D are used, which are provided with a protuberanceE, which when pressed upon the material in the female die produces a recess ct in the inner surface'of each comb-half, along the back, so that when the two halves are united a longitudinal bore is formed in the back. As shown at b in Fig. 3, this bore is extended downward toward the upperends of the teeth. As shown in Fig. 9, the recesses may extend from the bore down into the teeth. As shown at b in Fig. 4, the bore may be made circular in cross-section. As shown at b2 in Fig.,7, it. may be oval. ed into the handle H of the comb J, as shown at b3 in Fig. i. As shown in Fig. 6, a strip This bore may also be extend- F of metal or other substance may be introduced betweenl the two comb-halves along the back'and may project from the top of the back. This piece Falso stidens and strengthens the comb-back. As shown in Fig. 7, the

bore formed in the back of the comb may be filled by means of the filling-piece G, of metal or other substance, and this also tends to strengthen and stiden the back. As shown in Fig. 9, the two shanks forming a combtooth d may be separated at their upper parts and held apart by a brace e.

Having 1described my invention, what I claim'as new, and desire to secure by Letters Baten-t, is

l. A hardrubber comb composed of two longitudinal comb-halves having teeth and of substantially the same size and shape, each half having a longitudinal groove formed in theinner surface of its back-section, the inner surfaces of said halves being in contact,

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and the two halves permanently secured to each other by the vulcanizing process to form an entirety, substantially as set forth.

2. A hard-rubber comb composed of two longitudinal comb-halves having teeth and of substantially the same size and' shape, each half being provided on its inner surface with a longitudinal recess and with recesses extending from said longitudinal recess into the upper end parts of the teeth, the inner surfaces of said halves being in contact and the two longitudinal halves being vulcanized to- Vitnesses:

E. H. L. MUMMENHOFF, OTTO W. HELLMRICH. 

